The SPDR S&P 600 Small Cap ETF is an exchange-traded fund that aims to track the performance of the S&P 600 Index, which includes 600 small-cap U.S. companies. This ETF provides investors with exposure to a diverse range of smaller firms, which can offer growth potential and diversification benefits compared to larger companies. Investing in the SPDR S&P 600 Small Cap ETF allows individuals to buy shares that represent a portion of the underlying small-cap stocks. It is designed for those looking to invest in the small-cap segment of the market, making it a popular choice for investors seeking to capitalize on the growth potential of smaller companies.